While you wait for answers, we may have found some information which could help you.
Success
Message
burner going of after 2 or 3 minutes and on?
water goes cold during shower?
no hot water and pressure valve is on red and water is leakiing outside?
gas neoon flashing?
no domestic hot water?
charging system up?
were do I get a diagram and information on airpressureswitch 105he?
water sensor?
Fan light flashing?
max of 50 degrees hot water?
pressure switch?
what does F14 mean and F5?